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3D Nanoporous Gold‐Supported Pt Nanoparticles as Highly Accelerating Catalytic Au‐Pt Micromotors
Author(s) -
Jiang JinZhi,
Ren LingQing,
Huang YuPing,
Li XiaoDong,
Wu ShaoHua,
Sun JianJun
Publication year - 2018
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201701689
Subject(s) - nanoporous , materials science , nanoparticle , colloidal gold , nanotechnology , fabrication , deposition (geology) , microelectrode , porosity , electrochemistry , electrode , composite material , medicine , paleontology , chemistry , alternative medicine , pathology , sediment , biology
A self‐supported, nanoporous gold microelectrode decorated with various nanoparticles can be used for real‐time electrochemical monitoring, and the high performance of these electrochemical biosensors originates from their unique and seamless solid/porous nanoarchitecture. In this work, new, 3D, nanoporous, gold‐supported Pt nanoparticles are fabricated by Au‐Zn alloying/dealloying and template membrane deposition methods to produce Au‐Pt micromotors with highly accelerated motion. The speed of the micromotors can reach 1025 µm s −1 in a 10% H 2 O 2 solution, which is almost three times faster than unetched Au‐Pt micromotors. Four motion forms (circle, helical, circle and linear alternating, and linear) are demonstrated, and the speed of the circle motion is the fastest motion form. It is envisioned that the new fabrication method and enhanced motion can promote the micromotor efficiency for transport and delivery.